Change Your WiFi Network Through the Google Home App

The fastest way to change your Chromecast's WiFi network is through the Google Home app on your phone or tablet. Open the app, find your Chromecast device in the list, tap the settings icon (gear symbol), then select "Wi-Fi" and choose "Forget This Network." Your Chromecast will restart and enter setup mode, showing you a list of available networks. Select your new network, enter the password, and wait for the connection to complete—usually 30 seconds to two minutes.

This method works whether you're switching to a different WiFi band (2.4 GHz to 5 GHz, for example), moving to a new router, or connecting to a guest network. The Google Home app remembers your Chromecast's location and settings, so you won't lose any of your device preferences or casting history.

Key Takeaways

  • Use the Google Home app to change networks by opening your Chromecast's settings, selecting "Wi-Fi," and choosing "Forget This Network."
  • After forgetting the network, your Chromecast enters setup mode and displays available WiFi networks for you to select from.
  • The connection process takes 30 seconds to two minutes once you enter your network password.
  • If the Google Home app method does not work, you can factory reset your Chromecast and set it up again on the new network.
  • Chromecast works on both 2.4 GHz and 5 GHz networks, though 5 GHz typically offers faster speeds if your router supports it.

What to Do If the Google Home App Shows No Devices

Sometimes the Google Home app cannot find your Chromecast because it is still connected to your old WiFi network. Make sure your phone is on the same WiFi network as your Chromecast before opening the app. If your phone is on a different network (like a mobile hotspot or a different router), the app will not see the device.

If your phone and Chromecast are on the same network but the app still shows nothing, restart both devices. Unplug your Chromecast for 10 seconds, plug it back in, and wait for it to fully boot. Then close and reopen the Google Home app. If the device still does not appear, move on to the factory reset method described below.

Factory Reset Your Chromecast to Connect to a New Network

If you cannot access the Google Home app method—for example, if you have lost the password to your old network or your Chromecast is stuck—you can factory reset the device. Locate the small reset button on the back or bottom of your Chromecast (it may be recessed and require a straightened paperclip or similar tool to press). Hold the button for 15 seconds while the device is plugged in. The LED light will blink orange, then turn white, and the device will restart.

Once the reset is complete, your Chromecast will display a setup code on your TV screen. Open the Google Home app on your phone, tap the plus icon to add a device, and follow the on-screen instructions. When prompted, select your new WiFi network and enter the password. The setup process takes about five minutes from start to finish.

Switching Between 2.4 GHz and 5 GHz Networks

Many modern routers broadcast two WiFi bands at once: 2.4 GHz and 5 GHz. Chromecast works on both, but they are separate networks with different names (often labeled something like "NetworkName" for 2.4 GHz and "NetworkName-5G" for 5 GHz). If you want to move your Chromecast to the 5 GHz band for faster speeds, use the Google Home app method and straightforward select the 5 GHz network when the list appears.

The 5 GHz band is faster but has a shorter range, so it works best if your Chromecast is close to the router. The 2.4 GHz band is slower but reaches farther through walls and obstacles. If your Chromecast keeps disconnecting on 5 GHz, switch back to 2.4 GHz—some older Chromecast models are more stable on the slower band.

Troubleshooting Connection Problems After Changing Networks

If your Chromecast connects to the new network but then loses the connection, the issue is usually one of three things: the password was entered incorrectly, the router is too far away, or there is interference from other devices. First, check that you entered the WiFi password correctly by going back into the Google Home app settings and re-entering it. Passwords are case-sensitive, so "MyPassword" is different from "mypassword."

If the password is correct, move your Chromecast closer to the router temporarily to test whether distance is the problem. If the connection is stable when close, you may need to relocate the device or adjust your router's antenna position. If the connection is still unstable even near the router, restart both the Chromecast and your router by unplugging each for 10 seconds, then plugging them back in and waiting two minutes for them to fully boot.

Connecting Chromecast to a Guest Network or Hotspot

Chromecast can connect to guest networks and mobile hotspots, but some networks have restrictions that prevent casting. If you are trying to connect to a guest network at a hotel, office, or public space, check whether the network requires you to log in through a web browser first. Chromecast cannot complete that login process, so it will connect but not work for casting.

For mobile hotspots, Chromecast works fine as long as the hotspot is set to broadcast a standard WiFi network. Open the Google Home app, select your Chromecast, go to settings, choose "Wi-Fi," and select "Forget This Network." Then select your hotspot's network name and enter the password. Keep in mind that casting uses data from your hotspot's plan, so streaming video will consume data quickly.

Frequently Asked Questions

Do I lose my saved shows and preferences when I change WiFi networks?

No. Your Chromecast's settings, saved shows, and preferences are tied to your Google account, not to the WiFi network. When you reconnect on a new network, everything will be there. The only thing that changes is the network connection itself.

Can I change the WiFi network without unplugging my Chromecast?

Yes. Use the Google Home app to forget the current network, and your Chromecast will restart automatically and enter setup mode. You do not need to unplug it unless the device is unresponsive or stuck.

What if I do not know my WiFi password?

You can find your WiFi password by logging into your router's settings page (usually through a web browser on another device) or by checking the sticker on the back of your router. If you cannot find it, you can reset your router to factory settings, though this will erase all your network settings. Contact your internet provider if you need help recovering your password.

Why does my Chromecast keep disconnecting from the new WiFi network?

This usually happens because the device is too far from the router, the password was entered incorrectly, or there is interference from other devices. Try moving the Chromecast closer to the router, re-entering the password through the Google Home app, or restarting both devices. If the problem continues, try switching from 5 GHz to 2.4 GHz.

Can I connect my Chromecast to two WiFi networks at the same time?

No. Chromecast can only connect to one network at a time. If you need to switch between networks regularly, use the Google Home app to forget and reconnect each time—the process takes about two minutes.